How to model scrunchy, rounded spiral?
This can be very easily created by using the Add Curve: Extra Objects add-on.




Open the preferences (Edit > Preferences)
Search for Extra Objects and enable Add Curve: Extra Objects by ticking the checkbox.

Create the spiral object through Add > Curve > Curve Spirals > Torus. Open the Adjust Last Operation panel in the lower left corner and configure the parameters of the curve. The most relevant parameter is the number of turns.


Give the curve thickness by switching to the Object Data Properties of the curve and increasing the Depth property in the Geometry > Bevel panel.

Close the gap between the start and end segment of the spiral. Hold Shift and click on the two control points, then press F to close the segment.